Persistent identifier https://phaidra.univie.ac.at/o:1714951
Handle https://hdl.handle.net/11353/10.1714951
URI https://valep.vc.univie.ac.at/virtualarchive/public/Carnap_to_University_of_Chicago_Press_Roger_W_Shugg_1961-03-19_L_Copy/dv:981583